91383552 has 216 divisors, whose sum is σ = 296862384. Its totient is φ = 27869184.

The previous prime is 91383533. The next prime is 91383563. The reversal of 91383552 is 25538319.

It is a tau number, because it is divible by the number of its divisors (216).

It is a super-2 number, since 2×91383552² = 16701907152273408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 808648 + ... + 808760.

Almost surely, 2^91383552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91383552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148431192).

91383552 is an abundant number, since it is smaller than the sum of its proper divisors (205478832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91383552 is a wasteful number, since it uses less digits than its factorization.

91383552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 131 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 91383552 is about 9559.4744625424. The cubic root of 91383552 is about 450.4251981103.

The spelling of 91383552 in words is "ninety-one million, three hundred eighty-three thousand, five hundred fifty-two".